112 lines
4.1 KiB
TypeScript
112 lines
4.1 KiB
TypeScript
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import db from '../config/database';
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import { logger } from '../utils/logger';
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import { SupplierService } from './SupplierService';
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import { DecisionExplainabilityEngine } from '../core/ai/DecisionExplainabilityEngine';
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import { AdviceService } from '../domains/Strategy/AdviceService';
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/**
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* [BIZ_OPS_132] 供应商响应时效动态分级 (Supplier SLA)
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* @description 核心逻辑：基于响应速度 (avg_response_hours) 与交期 (avg_delivery_days) 自动标记低效方，并提供切换建议。
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*/
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export class SLAScoringService {
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private static readonly AUDIT_TABLE = 'cf_sourcing_audit';
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/**
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* 审计供应商 SLA 并生成警告/建议 (BIZ_OPS_132)
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*/
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static async auditSupplierSLA(tenantId: string, supplierId: string): Promise<any> {
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logger.info(`[SLAScoring] Auditing SLA for Supplier: ${supplierId}, Tenant: ${tenantId}`);
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try {
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// 1. 获取供应商最新绩效报告
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const supplierReport = await SupplierService.getSupplierTrustReport(supplierId);
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const metrics = supplierReport.metrics;
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const score = supplierReport.trustScore;
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// 2. SLA 阈值校验 (务实点)
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// 响应速度 > 24h 或 交期 > 10d 触发预警
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let slaBreached = false;
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let breachReason = '';
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if (metrics.responseHours > 24) {
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slaBreached = true;
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breachReason += `Response time (${metrics.responseHours}h) exceeds 24h limit. `;
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}
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if (metrics.deliveryDays > 10) {
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slaBreached = true;
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breachReason += `Delivery time (${metrics.deliveryDays}d) exceeds 10d limit. `;
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}
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if (score < 50) {
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slaBreached = true;
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breachReason += `Overall TrustScore (${score.toFixed(1)}) is dangerously low. `;
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}
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if (slaBreached) {
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logger.warn(`[SLAScoring] SLA Breach detected for ${supplierId}: ${breachReason}`);
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// 3. 寻找同租户下同类目更好的备选供应商 (模拟逻辑)
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const alternatives = await db('cf_suppliers')
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.where({ tenant_id: tenantId })
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.where('rating_score', '>', score + 10)
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.orderBy('rating_score', 'desc')
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.limit(1);
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const bestAlt = alternatives[0];
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const reason = `SLA BREACH: ${breachReason} ` +
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(bestAlt ? `Recommended to switch to ${bestAlt.name} (Score: ${bestAlt.rating_score.toFixed(1)}).` : 'Immediate review required.');
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// 4. 生成建议 (Suggestion-First) -> 统一至 AdviceService
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const suggestionId = await AdviceService.recordAdvice({
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tenantId,
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shopId: 'GLOBAL', // 供应商审核通常是全局的
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traceId: 'sla-audit-' + Date.now(),
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insight: {
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type: 'SUPPLIER',
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title: `SLA Breach: ${supplierReport.name}`,
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description: reason,
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impact: 'high',
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confidence: 0.95,
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suggestedAction: bestAlt ? `SWITCH_TO_${bestAlt.id}` : 'MANUAL_REVIEW',
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metadata: {
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supplierId,
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bestAlternativeId: bestAlt?.id,
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metrics
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}
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}
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});
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// 5. [UX_XAI_01] 记录决策证据链
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await DecisionExplainabilityEngine.logDecision({
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tenantId,
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module: 'SUPPLIER_SLA',
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resourceId: String(suggestionId),
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decisionType: 'SLA_BREACH_WARNING',
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causalChain: reason,
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factors: [
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{ name: 'ResponseHours', value: metrics.responseHours, weight: 0.4, impact: 'NEGATIVE' },
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{ name: 'DeliveryDays', value: metrics.deliveryDays, weight: 0.4, impact: 'NEGATIVE' },
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{ name: 'TrustScore', value: score, weight: 0.2, impact: 'NEGATIVE' }
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],
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traceId: 'sla-audit-' + Date.now()
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});
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return {
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success: true,
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suggestionId,
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slaBreached,
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reason,
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bestAlternative: bestAlt?.name,
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status: 'PENDING_REVIEW'
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};
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}
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return { success: true, slaBreached: false, message: 'SLA compliant' };
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} catch (err: any) {
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logger.error(`[SLAScoring][WARN] SLA audit failed: ${err.message}`);
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return { success: false, error: err.message };
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}
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}
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}
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